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// Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.security.tls;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Map;
import java.util.Optional;
/**
* Utility class for retrieving {@link TransportSecurityOptions} from the system.
*
* @author bjorncs
*/
public class TransportSecurityUtils {
public static final String CONFIG_FILE_ENVIRONMENT_VARIABLE = "VESPA_TLS_CONFIG_FILE";
public static final String INSECURE_MIXED_MODE_ENVIRONMENT_VARIABLE = "VESPA_TLS_INSECURE_MIXED_MODE";
public static final String INSECURE_AUTHORIZATION_MODE_ENVIRONMENT_VARIABLE = "VESPA_TLS_INSECURE_AUTHORIZATION_MODE";
private TransportSecurityUtils() {}
public static boolean isTransportSecurityEnabled() {
return isTransportSecurityEnabled(System.getenv());
}
public static boolean isTransportSecurityEnabled(Map<String, String> envVariables) {
return getConfigFile(envVariables).isPresent();
}
public static MixedMode getInsecureMixedMode() {
return getInsecureMixedMode(System.getenv());
}
public static MixedMode getInsecureMixedMode(Map<String, String> envVariables) {
return getEnvironmentVariable(envVariables, INSECURE_MIXED_MODE_ENVIRONMENT_VARIABLE)
.map(MixedMode::fromConfigValue)
.orElse(MixedMode.defaultValue());
}
public static AuthorizationMode getInsecureAuthorizationMode() {
return getInsecureAuthorizationMode(System.getenv());
}
public static AuthorizationMode getInsecureAuthorizationMode(Map<String, String> envVariables) {
return getEnvironmentVariable(envVariables, INSECURE_AUTHORIZATION_MODE_ENVIRONMENT_VARIABLE)
.map(AuthorizationMode::fromConfigValue)
.orElse(AuthorizationMode.defaultValue());
}
public static Optional<Path> getConfigFile() {
return getConfigFile(System.getenv());
}
public static Optional<Path> getConfigFile(Map<String, String> envVariables) {
return getEnvironmentVariable(envVariables, CONFIG_FILE_ENVIRONMENT_VARIABLE).map(Paths::get);
}
public static Optional<TransportSecurityOptions> getOptions() {
return getOptions(System.getenv());
}
public static Optional<TransportSecurityOptions> getOptions(Map<String, String> envVariables) {
return getConfigFile(envVariables)
.map(TransportSecurityOptions::fromJsonFile);
}
public static Optional<TlsContext> createTlsContext() {
return getConfigFile()
.map(configFile -> new ReloadingTlsContext(configFile, getInsecureAuthorizationMode()));
}
private static Optional<String> getEnvironmentVariable(Map<String, String> environmentVariables, String variableName) {
return Optional.ofNullable(environmentVariables.get(variableName))
.filter(var -> !var.isEmpty());
}
}
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